Integrated device and method for preparing sulfur by synergistic regeneration and reduction of active coke

A technology of active coke regeneration and active coke, which is applied in the direction of chemical instruments and methods, sulfur compounds, sulfur preparation/purification, etc., which can solve the problems of increasing operation cycle and control difficulty, complex adsorbent preparation process, and large diffusion resistance in adsorption To achieve the effect of alleviating the shortage of sulfur resources, reducing the dependence on foreign countries, and realizing the utilization of sulfur resources

Active Publication Date: 2022-03-04
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The active coke flue gas dry desulfurization demonstration projects that have been successfully applied at present all use shaped columnar activated coke with a diameter of 5-9mm, and the main desulfurization process includes adsorption, regeneration and sulfuric acid production, etc., and the preparation process of the adsorbent is complicated. , complex desulfurization process, large diffusion resistance in adsorption, small adsorption capacity, serious wear and other disadvantages
In addition, the columnar activated coke is arranged in a shell-and-tube moving bed in the adsorption and regeneration device, which has a long cycle period and large equipment capacity, which increases the operation period and control difficulty

Method used

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  • Integrated device and method for preparing sulfur by synergistic regeneration and reduction of active coke

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Embodiment 1

[0074] An integrated method for preparing sulfur by rapid regeneration and coordinated reduction of desulfurized powdered activated coke mainly includes the following steps:

[0075] Such as figure 1 As shown, what is discharged from the adsorption desulfurization unit is SO 2 The adsorbed sulfur-loaded powdery active coke 12 is saturated, the particle size is in the range of 50-200 μm, and the temperature is 60°C. First, it is sent to the active coke preheater 11 (which can be a variety of solid preheaters) for preheating and drying. The heating medium is the high-temperature air discharged from the regenerated powder coke cooler 8. The temperature of the high-temperature air is 400 ° C. Sulfur powder coke is heated to 200°C to reduce the precipitation of water at high temperature and reduce the concentration of sulfur-containing by-products, thereby increasing the conversion rate of sulfur.

[0076] The preheated and dried sulfur-loaded powder coke is sent to the active co...

Embodiment 2

[0083] An integrated method for preparing sulfur by rapid regeneration and coordinated reduction of desulfurized powdered activated coke mainly includes the following steps:

[0084]Such as figure 1 As shown, what is discharged from the adsorption desulfurization unit is SO 2 The adsorbed sulfur-loaded powdery activated coke 12 has a particle size in the range of 50-200 μm and a temperature of 100° C. First sent to the active coke preheater 11 (which can be a variety of solid preheaters) for preheating and drying. The heating medium is the high-temperature air discharged from the regenerated powder coke cooler 8. The temperature of the high-temperature air is 500 ° C. Sulfur powder coke is heated to 220°C to reduce the precipitation of water at high temperature and reduce the concentration of sulfur-containing by-products, thereby increasing the conversion rate of sulfur.

[0085] The preheated and dried sulfur-loaded powder coke is sent to the active coke storage device 10 ...

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Abstract

The invention relates to an integrated device and method for preparing sulfur through regeneration and reduction of active coke. Comprising a regeneration reduction furnace which is of a shell-and-tube structure and comprises a reaction inner tube and a combustion cavity on the outer side of the reaction inner tube, the reaction inner tube is vertically arranged, the top of the reaction inner tube is provided with a coke breeze feeding port, the bottom of the reaction inner tube is provided with a coke breeze discharging port, and one side of the lower portion of the reaction inner tube is provided with a gas outlet; a gas outlet of the reaction inner pipe is connected with an inlet of the gas-solid separator; the gas outlet of the gas-solid separator is connected with the inlet of the sulfur recovery device. The integration of regeneration reaction and reduction reaction is realized. The reaction time is short, the sulfur conversion rate is high, and the adsorption capacity of the regenerated active coke is large.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of desulfurization waste, and in particular relates to an integrated device and method for preparing sulfur through regeneration and synergistic reduction of active coke. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The active coke flue gas dry desulfurization demonstration projects that have been successfully applied at present all use shaped columnar activated coke with a diameter of 5-9mm, and the main desulfurization process includes adsorption, regeneration and sulfuric acid production, etc., and the preparation process of the adsorbent is complicated. , complex desulfuriza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/12B01J8/08C01B17/04
CPCB01J8/12B01J8/085B01J8/087B01J8/082C01B17/0482B01J2208/00168B01J2208/00504B01J2208/00548B01J2208/00769B01J2208/00805Y02P20/129
Inventor 张立强马春元李军夏霄张梦泽王涛周晓涵成善杰
Owner SHANDONG UNIV
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